Calcite
Certain Teed Gypsum Mine, Briar, Howard County, Arkansas, USA
This is the first specimen of calcite that we've ever had from the lesser known Certain Teed Gypsum Mine (Briar Gypsum Mine) in Arkansas. The display side of this specimen hosts many incredibly sharp, highly lustrous, gem quality, colorless to orange (iron included) scalenohedral crystals of calcite measuring up to 8 mm long on DeQueen Limestone ...
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